Rotary kiln.



UNITED STATES .PATENT OFFICE.

WILLIAM R. WARREN, OF NEW YORK, N. Y.

ROTARY KlLN.

No. s393953.

. .To all whom it may concern:

Beit known that I, WILLIAM R. WARREN, a citizen of the United States, residing at New-York city, in the county and State of New York, have invented new and useful Improvements in Rotary Kilns, of which the following is a speciiication.

This invention relates to a kiln for burning cement and the like, and by means of this invention thorough conversion of material is assured.

This invention is set forth in the following specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a longitudinal sectional elevation of a kiln embodying this invention. Fig. 2 is a view of the discharge end and fuelintake of the kiln. Fig. 3 is a section along Fig. 1. Fig. 4 shows a cover.

The kiln can be of any diameter, usually about six feet, without being exact. This kiln a is shown with enlarged portion for some distance from its outlet or dischargespout b. This spout is shown extending from an outer shield c, while the inner shield d is shown with outlet y' in the center. The outer shield could, however, be omitted and the outlet attached directly to the shield d.

A fuel-intake is shown at e.

The shield c may have an outlet at the bottom with means for closing the same, so that material will collect in the kiln before discharging through spout b, which is located above the bottom or at the center portion of the kiln.

The enlarged art of the kiln embraces what may be ca ed the clinkering zone of the device. If seen fit, the kiln can also have partitions.

The shield c may be supported in any manner desired.

By means of this invention the material to be converted into clinker will accumulate in the enlarged kiln-section or clinkering zone and be there retained long enough to be thoroughly converted into clinker. The outlet b being placed at an elevated point, as described, will prevent the material from passing olf or going out except from the top of the accumulated mass.

Specification of Letters Patent.

Patented Dec. 18, 1906.

4 Application filed January 19, 1906. Serial No. 296.889.

The enlarged part or section needs to ex tend only substantially along the chnkermgzone, and being of increased diameter-for exam le, eight feet to a six-foot diameter kilnwil allow of thoroughly converting into clinker, as described, a much larger volume of material than is possible in the usual ln'ln.

Of course the relative dimensions given as example are not to be considered as limiting the scope of the invention.

A peep-hole may be in the discharge-s out around the intake-pipe or elsewhere, an the spout may have one or more dampers to more perfectly regulate the amount of au' to the kiln.

I do not limit myself to the construction of an end shield or shields, as above set forth. The usual single shield resting upon thenilpor material, the clinker passingutmver. the.....

portion closed against outlet so as to cause the material under treatment to accumulate and ass 0H only from the top of the accumulated) mass.

4. A rotary kiln having an enlarged portion with fuel-intake and an outlet located above the bottom of the kiln, the lower portion of the kiln being closed against outlet.

In testimony whereof I have hereunto -set my hand in the presence of two subscribing witnesses.

WILLIAM R. WARREN.

Witnesses:

EDWARD WrEsNER, GEORGE HULSBERG. 

